C/2000 B2 (LINEAR)
| Parameter |
Value |
| Designation |
C/2000 B2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-11-10T01:23:20.175360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:03Z |
| Obs used |
86 |
| NEO |
- |
| M1 |
13.500 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2000-02-10.0000000 |
| e |
0.99949095 |
| q (au) |
3.776151 |
| a (au) |
7417.993350 |
| i (deg) |
93.648730 |
| Ω (om, deg) |
284.990983 |
| ω (w, deg) |
154.593587 |
| M (ma, deg) |
0.000142 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.297 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.297 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-0.997 |
| k |
1.000 |
| δ90 |
10.000 |
| Parameter |
Symbol |
Range |
Description |
| Absolute magnitude at 1 AU from Sun and Earth |
H0 |
-5 to 20 |
Intrinsic brightness of the comet |
| Photometric slope parameter |
n |
2 to 6 |
Rate of brightness change with heliocentric distance |
| Forward scattering asymmetry factor |
gf |
0.8 to 1 |
Degree of forward scattering |
| Backward scattering asymmetry factor |
gb |
-1 to -0.5 |
Degree of backward scattering |
| Partitioning coefficient |
k |
0.8 to 1 |
Ratio between forward/backward scattering contributions |
| Dust-to-gas brightness ratio |
δ90 |
1 to 10 |
Relative contribution of dust scattering to gas emission |
Reference: EPSC-DPS2025-160
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
21:53:05.28 |
-76:16:32.1 |
HIP 107847 |
8.50 |
| 2026-02-03 12:00 |
21:53:14.81 |
-76:16:17.4 |
HIP 107847 |
8.89 |
| 2026-02-04 00:00 |
21:53:24.36 |
-76:16:03.1 |
HIP 107847 |
9.31 |
| 2026-02-04 12:00 |
21:53:33.92 |
-76:15:49.0 |
HIP 107847 |
9.75 |
| 2026-02-05 00:00 |
21:53:43.49 |
-76:15:35.1 |
HIP 107847 |
10.21 |
| 2026-02-05 12:00 |
21:53:53.07 |
-76:15:21.6 |
HIP 107847 |
10.69 |
| 2026-02-06 00:00 |
21:54:02.66 |
-76:15:08.3 |
HIP 108354 |
11.13 |
| 2026-02-06 12:00 |
21:54:12.26 |
-76:14:55.2 |
HIP 108354 |
10.52 |
| 2026-02-07 00:00 |
21:54:21.87 |
-76:14:42.4 |
HIP 108354 |
9.92 |
| 2026-02-07 12:00 |
21:54:31.49 |
-76:14:29.9 |
HIP 108354 |
9.32 |
| 2026-02-08 00:00 |
21:54:41.12 |
-76:14:17.7 |
HIP 108354 |
8.72 |
| 2026-02-08 12:00 |
21:54:50.75 |
-76:14:05.7 |
HIP 108354 |
8.12 |
| 2026-02-09 00:00 |
21:55:00.40 |
-76:13:54.0 |
HIP 108354 |
7.52 |
| 2026-02-09 12:00 |
21:55:10.05 |
-76:13:42.6 |
HIP 108354 |
6.93 |
| 2026-02-10 00:00 |
21:55:19.70 |
-76:13:31.4 |
HIP 108354 |
6.33 |
| 2026-02-10 12:00 |
21:55:29.36 |
-76:13:20.5 |
HIP 108354 |
5.74 |
| 2026-02-11 00:00 |
21:55:39.03 |
-76:13:09.9 |
HIP 108354 |
5.15 |
| 2026-02-11 12:00 |
21:55:48.70 |
-76:12:59.5 |
HIP 108354 |
4.56 |
| 2026-02-12 00:00 |
21:55:58.37 |
-76:12:49.4 |
HIP 108354 |
3.98 |
| 2026-02-12 12:00 |
21:56:08.04 |
-76:12:39.6 |
HIP 108354 |
3.40 |
| 2026-02-13 00:00 |
21:56:17.72 |
-76:12:30.1 |
HIP 108354 |
2.83 |
| 2026-02-13 12:00 |
21:56:27.40 |
-76:12:20.9 |
HIP 108354 |
2.27 |
| 2026-02-14 00:00 |
21:56:37.08 |
-76:12:11.9 |
HIP 108354 |
1.74 |
| 2026-02-14 12:00 |
21:56:46.76 |
-76:12:03.2 |
HIP 108354 |
1.26 |
| 2026-02-15 00:00 |
21:56:56.44 |
-76:11:54.7 |
HIP 108354 |
0.93 |
| 2026-02-15 12:00 |
21:57:06.12 |
-76:11:46.6 |
HIP 108354 |
0.91 |
| 2026-02-16 00:00 |
21:57:15.80 |
-76:11:38.7 |
HIP 108354 |
1.22 |
| 2026-02-16 12:00 |
21:57:25.47 |
-76:11:31.1 |
HIP 108354 |
1.68 |
| 2026-02-17 00:00 |
21:57:35.14 |
-76:11:23.8 |
HIP 108354 |
2.21 |
| 2026-02-17 12:00 |
21:57:44.81 |
-76:11:16.8 |
HIP 108354 |
2.75 |
| 2026-02-18 00:00 |
21:57:54.48 |
-76:11:10.1 |
HIP 108354 |
3.31 |
| 2026-02-18 12:00 |
21:58:04.14 |
-76:11:03.6 |
HIP 108354 |
3.88 |
| 2026-02-19 00:00 |
21:58:13.79 |
-76:10:57.4 |
HIP 108354 |
4.45 |
| 2026-02-19 12:00 |
21:58:23.44 |
-76:10:51.5 |
HIP 108354 |
5.02 |
| 2026-02-20 00:00 |
21:58:33.08 |
-76:10:45.9 |
HIP 108354 |
5.59 |
| 2026-02-20 12:00 |
21:58:42.72 |
-76:10:40.5 |
HIP 108354 |
6.16 |
| 2026-02-21 00:00 |
21:58:52.35 |
-76:10:35.5 |
HIP 108354 |
6.73 |
| 2026-02-21 12:00 |
21:59:01.96 |
-76:10:30.7 |
HIP 108354 |
7.30 |
| 2026-02-22 00:00 |
21:59:11.57 |
-76:10:26.2 |
HIP 108354 |
7.87 |
| 2026-02-22 12:00 |
21:59:21.17 |
-76:10:22.0 |
HIP 108354 |
8.44 |
| 2026-02-23 00:00 |
21:59:30.76 |
-76:10:18.1 |
HIP 108354 |
9.01 |
| 2026-02-23 12:00 |
21:59:40.34 |
-76:10:14.4 |
HIP 108354 |
9.58 |
| 2026-02-24 00:00 |
21:59:49.90 |
-76:10:11.1 |
HIP 108354 |
10.15 |